EP1258303A1 - Novel smelting furnace for molding - Google Patents

Novel smelting furnace for molding Download PDF

Info

Publication number
EP1258303A1
EP1258303A1 EP20000901145 EP00901145A EP1258303A1 EP 1258303 A1 EP1258303 A1 EP 1258303A1 EP 20000901145 EP20000901145 EP 20000901145 EP 00901145 A EP00901145 A EP 00901145A EP 1258303 A1 EP1258303 A1 EP 1258303A1
Authority
EP
European Patent Office
Prior art keywords
molding
casting furnace
new
storage tank
additional
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20000901145
Other languages
German (de)
French (fr)
Other versions
EP1258303B1 (en
Inventor
Luis Cobos Jimenez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fundacion Tecnalia Research and Innovation
Original Assignee
Fundacion Inasmet
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fundacion Inasmet filed Critical Fundacion Inasmet
Publication of EP1258303A1 publication Critical patent/EP1258303A1/en
Application granted granted Critical
Publication of EP1258303B1 publication Critical patent/EP1258303B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/08—Heating by electric discharge, e.g. arc discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
    • F27B14/061—Induction furnaces
    • F27B14/065—Channel type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/19—Arrangements of devices for discharging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/02—Ohmic resistance heating
    • F27D11/04—Ohmic resistance heating with direct passage of current through the material being heated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/14—Charging or discharging liquid or molten material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0054—Means to move molten metal, e.g. electromagnetic pump
    • F27D2003/0056—Means to move molten metal, e.g. electromagnetic pump through a syphon in a vacuum chamber, e.g. involving aspiration or pressure on the bath
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system
    • F27D2099/0031—Plasma-torch heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment

Definitions

  • the pouring, from the taphole, must adjust strictly to the production order, which depends on the nature of the part to be cast.
  • the temperature ( ⁇ ) in the taphole must vary and, for this, we do vary the temperature of the liquid metal in the tank, which is the origin, because of its large mass, high inertia, low flexibility and large energy expenditure.
  • This arrangement allows, when the temperature has to be increased ( ⁇ ) liquid metal in the tap hole, due to the necessities of the part to be molded or other, the mass of liquid metal to be heated is small (only the mass additional room) and, thanks to the plasma, to have a heating practically instantaneous, which makes the system greatly increase its flexibility, adjusts to the very moment to the necessities and supposes a great saving of energy.
  • the invention provides that the additional chamber is connected upstream of the tap hole, i.e., towards the orifice of the outlet nozzle of the storage tank.
  • the volume (V) of the additional chamber will be greater than if we decides to keep them and use them when desired, the volume (V) of the additional room which can represent, in the first case, between 5 and 10% of the total useful volume (Vt) of the oven: 5% Vt ⁇ V ⁇ 10% Vt, being included in the second case, between 15 and 20%, i.e. 15% Vt ⁇ V ⁇ 20% Vt, these quantities being approximate and experimental.
  • Figure 1 is a schematic representation of a casting furnace Already known.
  • FIG 2 is a schematic representation of the improvements introduced into an oven like that of Figure 1, which are the subject of the invention.
  • an additional chamber (14) is installed located between the branch (12) of the tank (3) with the outlet nozzle (6) and the casting (8), having been specified in FIG. 2 that the additional chamber (14) is preferably located between the outlet of the outlet nozzle (6) and the casting (8).
  • the cathode (15) of a plasma torch is installed with its conventional means of raising / lowering and which operates in an inert atmosphere, for example N 2 .
  • the cooling plates (16) are also installed corresponding.
  • the anode (17 1 ) can be installed, approximately, in the additional chamber, for example at the mouth (18) of the outlet nozzle (6).
  • a retaining wall (19) is put in place between the additional chamber (14) and the taphole (8), having means for its raising / lowering.
  • the retaining wall (19) will have its end immersed in the liquid metal, so that the gas used with the plasma, for example N 2 , does not pass into the chamber of the tap hole (8), which reduces the volumetric requirements of this gas.
  • this retaining wall (19) prevents the passage of slag, which floats in the molten metal, from the additional chamber (14) to the tap hole (8), and also prevents the exit of radiation by shielding the plasma arc which is produced between the cathode (15) and the liquid metal.
  • heating means for example inductor (4) and / or plasma (10) or others, in the storage tank (3), they can be used for heating the main mass and use the plasma (15) in the additional chamber at your discretion.
  • the pressures of the corresponding inert gases (N 2 ) can be used to produce paths of liquid metal downstream, upstream and standardize the temperatures.
  • the plasma (15) of the additional chamber (14) and the pressure of its gas inert can exercise alone the mission of heating the metal of the tank (3) in forcing the liquid metal to descend from the outlet nozzle (6) and to mix with the metal of the tank (3).
  • This solo function requires increasing the volume of the additional chamber (14) of about 14 to 21% of the volume of metal which it must heat (in case of prolonged shutdown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Details (AREA)
  • Plasma Technology (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Glass Compositions (AREA)
  • Processing Of Solid Wastes (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

An additional chamber (14) between the molten metal storage tank and the taphole for adding molten metal to the mould is used to carry out heating of the metal using a thermal plasma torch. A smelting furnace for casting includes a supply nozzle connected to a molten metal storage tank and an exit nozzle (6) that delivers molten metal to the casting mould taphole. An additional chamber between the molten metal storage tank and the taphole is used to carry out heating of the molten metal using a thermal plasma torch.

Description

À l'heure actuelle, on connaít les fours de coulée pour moulage automatique dans lesquels le chauffagedu métal liquide dans la cuve a lieu au moyen d'inducteurs disposés à la base ou sur les côtés, ou au moyen de plasma comme dans l'EP0916435.At present, we know the casting furnaces for molding in which the heating of the liquid metal in the tank takes place by means of inductors arranged at the base or on the sides, or by means of plasma as in the EP0916435.

La coulée, à partir du trou de coulée, doit s'ajuster strictement à l'ordre de fabrication, qui dépend de la nature de la pièce à couler.The pouring, from the taphole, must adjust strictly to the production order, which depends on the nature of the part to be cast.

Cette nature nous oblige à avoir le métal, dans la trou de coulée, à une température () fixée au préalable et variable pour chaque type de pièce, de petites marges ( ± Δ) étant admises dans les variations de température par rapport à celle qui est fixée au préalable, ces marges variant également pour chaque pièce à couler.This nature forces us to have the metal, in the tap hole, to a temperature () fixed beforehand and variable for each type of room, from small margins ( ± Δ) being allowed in temperature variations with respect to that which is fixed beforehand, these margins also varying for each part to flow.

En conséquence, et dans le cadre de la cadence des ordres de fabrication, la température () dans le trou de coulée doit varier et, pour cela, on fait varier la température du métal liquide dans la cuve, ce qui est à l'origine, du fait de sa grande masse, à des inerties importantes, à une faible flexibilité et à une grosses dépense d'énergie.Consequently, and within the framework of the order of manufacturing, the temperature () in the taphole must vary and, for this, we do vary the temperature of the liquid metal in the tank, which is the origin, because of its large mass, high inertia, low flexibility and large energy expenditure.

Le demandeur a résolu le problème mentionné en créant une chambre additionnelle entre la cuve et le trou de coulée et en disposant que le chauffage de cette chambre additionnelle le soit par plasma.The plaintiff resolved the mentioned problem by creating a additional chamber between the tank and the tap hole and arranging that the heating of this additional room is by plasma.

Cette disposition permet, lorsqu'il faut augmenter la température ( ) du métal liquide dans le trou de coulée, du fait des nécessités de la pièce à mouler ou autres, à la masse de métal liquide à chauffer d'être petite (uniquement la masse de chambre additionnelle) et, grâce au plasma, d'avoir un chauffage pratiquement instantané, ce qui fait que le système augmente énormément sa flexibilité, s'ajuste à l'instant même aux nécessités et suppose une grande économie d'énergie.This arrangement allows, when the temperature has to be increased ( ) liquid metal in the tap hole, due to the necessities of the part to be molded or other, the mass of liquid metal to be heated is small (only the mass additional room) and, thanks to the plasma, to have a heating practically instantaneous, which makes the system greatly increase its flexibility, adjusts to the very moment to the necessities and supposes a great saving of energy.

Pour améliorer encore plus le four, l'invention prévoit que la chambre additionnelle soit connexe en amont du trou de coulée, c'est-à-dire, vers l'orifice de la tuyère de sortie de la cuve de stockage. To further improve the oven, the invention provides that the additional chamber is connected upstream of the tap hole, i.e., towards the orifice of the outlet nozzle of the storage tank.

Cette chambre additionnelle rend inutiles les moyens de chauffage de la cuve, tels que l'inducteur ou le plasma, quoiqu'elle puisse parfaitement s'y ajouter.This additional room eliminates the need for heating of the tank, such as the inductor or the plasma, although it can perfectly add.

Il faut comprendre que si l'on se passe des moyens de chauffage de la cuve, le volume (V) de la chambre additionnelle sera plus important que si l'on décide de les conserver et de les utiliser quand on le souhaitera, le volume (V) de la chambre additionnelle pouvant représenter, dans le premier cas, entre 5 et 10% du volume total (Vt) utile du four: 5% Vt ≤ V ≤ 10% Vt, étant compris, dans le second cas, entre 15 et 20%, c'est-à-dire 15% Vt ≤ V ≤ 20% Vt, ces quantités étant approximatives et expérimentales.It should be understood that if we do not use heating means the tank, the volume (V) of the additional chamber will be greater than if we decides to keep them and use them when desired, the volume (V) of the additional room which can represent, in the first case, between 5 and 10% of the total useful volume (Vt) of the oven: 5% Vt ≤ V ≤ 10% Vt, being included in the second case, between 15 and 20%, i.e. 15% Vt ≤ V ≤ 20% Vt, these quantities being approximate and experimental.

Pour mieux comprendre l'objet de la présente invention, on a représenté sur les plans une forme préférentielle de réalisation pratique susceptible de changements accessoires qui n'en dénaturent pas le fondementTo better understand the object of the present invention, we have shown on the plans a preferred practical embodiment capable of incidental changes which do not distort the basis

La figure 1 est la représentation schématique d'un four de coulée déjà connu.Figure 1 is a schematic representation of a casting furnace Already known.

La figure 2 est une représentation schématique des améliorations introduites dans un four comme celui de la figure 1, qui font l'objet de l'invention.Figure 2 is a schematic representation of the improvements introduced into an oven like that of Figure 1, which are the subject of the invention.

Dans la figure 1, on dispose, de façon conventionnelle, de:

  • 1.- Trou de charge du métal liquide, par exemple 1430°C.
  • 2.- Tuyère de charge.
  • 3.- Cuve de stockage.
  • 4.- Inducteur de chauffage (optionnel).
  • 5.- Couvercle de pressurisation.
  • 6.- Tuyère de sortie.
  • 7.- Moules.
  • 8.- Trou de coulée.
  • 9.- "Stoppeur"
  • 10.- Cathode de torche à plasma (optionnel).
  • 11.- Entrée/sortie des gaz.
  • g.- Gaz inerte.
  • T.- Capteur de température
  • 12.- Embranchement cuve de stockage, tuyère de sortie.
  • 13.- Orifice de sortie de la tuyère de sortie.
  • b.- Buse.
    • In Figure 1, we have, in a conventional manner, of:
  • 1.- Liquid metal charge hole, for example 1430 ° C.
  • 2.- Charging nozzle.
  • 3.- Storage tank.
  • 4.- Heating inductor (optional).
  • 5.- Pressurization cover.
  • 6.- Outlet nozzle.
  • 7.- Mussels.
  • 8.- Tapping hole.
  • 9.- "Stopper"
  • 10.- Plasma torch cathode (optional).
  • 11.- Gas inlet / outlet.
  • g.- Inert gas.
  • T.- Temperature sensor
  • 12.- Branching of storage tank, outlet nozzle.
  • 13.- Outlet port of the outlet nozzle.
  • b.- Nozzle.

    • On décrit ci-dessous un exemple de réalisation pratique, non limitative, de la présente invention.A practical example is described below, not limiting, of the present invention.

    Le mouvement en aval du métal liquide a lieu du trou de chargement (1) au trou de coulée (8).The downstream movement of the liquid metal takes place from the loading (1) at the tap hole (8).

    Dans l'invention, on installe une chambre additionnelle (14) située entre l'embranchement (12) de la cuve (3) avec la tuyère de sortie (6) et le trou de coulée (8), ayant été précisé sur la figure 2 que la chambre additionnelle (14) est située de préférence entre l'orifice de sortie de la tuyère de sortie (6) et le trou de coulée (8).In the invention, an additional chamber (14) is installed located between the branch (12) of the tank (3) with the outlet nozzle (6) and the casting (8), having been specified in FIG. 2 that the additional chamber (14) is preferably located between the outlet of the outlet nozzle (6) and the casting (8).

    Le tout, comme cela est habituel, recouvert de matériau réfractaire (r).The whole, as usual, covered with refractory material (R).

    Dans la chambre additionnelle (14), on installe la cathode (15) d'une torche à plasma avec ses moyens conventionnels de montée/abaissement et qui fonctionne en atmosphère inerte, par exemple du N2.In the additional chamber (14), the cathode (15) of a plasma torch is installed with its conventional means of raising / lowering and which operates in an inert atmosphere, for example N 2 .

    On installe également les plaques (16) de refroidissement correspondantes.The cooling plates (16) are also installed corresponding.

    L'anode (171) peut être installée, de façon approximative, dans la chambre additionnelle, par exemple à l'embouchure (18) de la tuyère de sortie (6).The anode (17 1 ) can be installed, approximately, in the additional chamber, for example at the mouth (18) of the outlet nozzle (6).

    En option, on met en place une paroi de rétention (19) entre la chambre additionnelle (14) et le trou de coulée (8), en disposant des moyens pour sa montée/abaissement.Optionally, a retaining wall (19) is put in place between the additional chamber (14) and the taphole (8), having means for its raising / lowering.

    Normalement, la paroi de rétention (19) aura son extrémité plongée dans le métal liquide, de sorte que le gaz utilisé avec le plasma, par exemple du N2, ne passe pas dans la chambre du trou de coulée (8), ce qui permet de réduire les nécessités volumétriques de ce gaz. De même, cette paroi de rétention (19) empêche le passage de scories, qui flottent dans le métal liquide, de la chambre additionnelle (14) au trou de coulée (8), et empêche également la sortie de rayonnement en faisant écran l'arc de plasma qui est produit entre la cathode (15) et le métal liquide.Normally, the retaining wall (19) will have its end immersed in the liquid metal, so that the gas used with the plasma, for example N 2 , does not pass into the chamber of the tap hole (8), which reduces the volumetric requirements of this gas. Likewise, this retaining wall (19) prevents the passage of slag, which floats in the molten metal, from the additional chamber (14) to the tap hole (8), and also prevents the exit of radiation by shielding the plasma arc which is produced between the cathode (15) and the liquid metal.

    Si on utilise la paroi de rétention (19), il est conseillé de replacer l'anode (172) et de la mettre dans la zone du trou de coulée (8), c'est-à-dire en aval de cette paroi de rétention (19).If the retention wall (19) is used, it is advisable to replace the anode (17 2 ) and put it in the region of the tap hole (8), that is to say downstream of this wall retention (19).

    Avec ce positionnement de l'anode (172), on y évite l'accumulation de scories et on en facilite l'entrée, le contrôle et le remplacement en cas de panne ou d'usure.With this positioning of the anode (17 2 ), it avoids the accumulation of slag and it facilitates entry, control and replacement in the event of breakdown or wear.

    Dans le cas d'arrêt prolongé, de panne, etc., si l'on dispose de moyens de chauffage, par exemple inducteur (4) et/ou plasma (10) ou autres, dans la cuve de stockage (3), on peut les utiliser pour le chauffage de la masse principale et utiliser à discrétion le plasma (15) de la chambre additionnelle.In the event of prolonged shutdown, breakdown, etc., if heating means, for example inductor (4) and / or plasma (10) or others, in the storage tank (3), they can be used for heating the main mass and use the plasma (15) in the additional chamber at your discretion.

    Dans le cas où coexisteraient les deux plasmas (10), (15), on peut utiliser les pressions des gaz inertes (N2) correspondants pour produire des parcours de métal liquide en aval, en amont et uniformiser les températures.If the two plasmas (10), (15) coexist, the pressures of the corresponding inert gases (N 2 ) can be used to produce paths of liquid metal downstream, upstream and standardize the temperatures.

    Dans le cas où l'on ne disposerait pas de moyens de chauffage dans la cuve, le plasma (15) de la chambre additionnelle (14) et la pression de son gaz inerte peuvent exercer seuls la mission de chauffer le métal de la cuve (3) en obligeant le métal liquide à descendre de la tuyère de sortie (6) et à se mélanger avec le métal de la cuve (3). Cette fonction en solitaire oblige à augmenter le volume de la chambre additionnelle (14) de 14 à 21% environ du volume de métal qu'elle doit chauffer (en cas d'arrêt prolongé).In the event that there is no heating means in the tank, the plasma (15) of the additional chamber (14) and the pressure of its gas inert can exercise alone the mission of heating the metal of the tank (3) in forcing the liquid metal to descend from the outlet nozzle (6) and to mix with the metal of the tank (3). This solo function requires increasing the volume of the additional chamber (14) of about 14 to 21% of the volume of metal which it must heat (in case of prolonged shutdown).

    Claims (8)

    Nouveau four de coulée pour moulage, de ceux qui se composent d'une tuyère de chargement reliée à une cuve de stockage du métal liquide et d'où part une tuyère de sortie qui débouche sur le trou d'alimentation des moules, se caractérisant par le fait qu'entre la cuve de stockage du métal liquide et le trou d'alimentation des moules, il dispose d'une chambre additionnelle de chauffage, au moyen d'une torche à plasma thermique.New casting furnace for molding, of those who consist of a loading nozzle connected to a metal storage tank liquid and from where an outlet nozzle which opens on the supply hole of the molds, characterized by the fact that between the liquid metal storage tank and the mold feed hole, it has an additional heating chamber, by means of a thermal plasma torch. Nouveau four de coulée pour moulage, selon la revendication précédente, se caractérisant par le fait que la chambre additionnelle de chauffage est disposée en aval de l'orifice de sortie de la tuyère de sortie.New molding casting furnace according to claim previous, characterized by the fact that the additional heating chamber is disposed downstream of the outlet opening of the outlet nozzle. Nouveau four de coulée pour moulage, selon les revendications précédentes, se caractérisant par le fait qu'on installe entre la chambre additionnelle de chauffage et le trou d'alimentation des moules, une paroi de rétention plongée, du moins partiellement, dans le métal liquide.New molding casting furnace according to the claims previous, characterized by the fact that it is installed between the additional chamber heating and the mold feed hole, a submerged retention wall, less partially, in the liquid metal. Nouveau four de coulée pour moulage, selon la première et la deuxième revendications, se caractérisant par le fait que l'anode de la torche à plasma est placée approximativement dans les parois de la chambre additionnelle.New casting furnace for molding, according to the first and the second claim, characterized in that the anode of the plasma torch is placed approximately in the walls of the additional chamber. Nouveau four de coulée pour moulage, selon la troisième revendication, se caractérisant par le fait que l'anode de la torche à plasma est située en aval de la paroi de rétention.New casting furnace for molding, according to the third claim, characterized in that the anode of the plasma torch is located downstream of the retention wall. Nouveau four de coulée pour moulage, selon la troisième revendication, se caractérisant par le fait qu'on y a installé des moyens pour faire monter/descendre la paroi de rétention.New casting furnace for molding, according to the third claim, characterized by the fact that means have been installed therein to make up / down the retention wall. Nouveau four de coulée pour moulage, selon la première revendication, se caractérisant par le fait que le volume (V) de la chambre additionnelle représente entre 14% et 21% environ du volume total (Vt) du four: 14% Vt≤V≤21% Vt.New casting furnace for molding, according to the first claim, characterized in that the volume (V) of the chamber between 14% and 21% approximately of the total volume (Vt) of the oven: 14% Vt≤V≤21% Vt. Nouveau four de coulée pour moulage, selon la première revendication, se caractérisant par le fait que la cuve de stockage du métal liquide dispose de ses propres moyens de chauffage, le volume (V) de la chambre additionnelle représentant entre 5% et 10% environ du volume (Vt) total du four: 5% Vt ≤ V ≤ 10% Vt.New casting furnace for molding, according to the first claim, characterized in that the liquid metal storage tank has its own heating means, the volume (V) of the room additional representing between 5% and 10% approximately of the total volume (Vt) of the oven: 5% Vt ≤ V ≤ 10% Vt.
    EP00901145A 1999-12-23 2000-01-21 Novel smelting furnace for molding Expired - Lifetime EP1258303B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    ES9902838 1999-12-23
    ES009902838A ES2168930B2 (en) 1999-12-23 1999-12-23 COLADA OVEN FOR MOLDING
    PCT/ES2000/000023 WO2001047656A1 (en) 1999-12-23 2000-01-21 Novel smelting furnace for molding

    Publications (2)

    Publication Number Publication Date
    EP1258303A1 true EP1258303A1 (en) 2002-11-20
    EP1258303B1 EP1258303B1 (en) 2003-07-16

    Family

    ID=8311055

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00901145A Expired - Lifetime EP1258303B1 (en) 1999-12-23 2000-01-21 Novel smelting furnace for molding

    Country Status (10)

    Country Link
    US (1) US6814925B1 (en)
    EP (1) EP1258303B1 (en)
    JP (1) JP2003518439A (en)
    KR (1) KR100649281B1 (en)
    AT (1) ATE245073T1 (en)
    AU (1) AU2111200A (en)
    DE (1) DE60003955T2 (en)
    ES (1) ES2168930B2 (en)
    RU (1) RU2235002C2 (en)
    WO (1) WO2001047656A1 (en)

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2399527A (en) * 2003-03-21 2004-09-22 Pyrotek Engineering Materials Tundish with thermostatically controllable heating element
    CN107655331A (en) * 2017-10-17 2018-02-02 江苏粤阜合金材料有限公司 A kind of environment-friendly type aluminium melting furnace and its method of smelting

    Families Citing this family (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7977599B2 (en) * 2007-10-19 2011-07-12 Honeywell International Inc. Erosion resistant torch
    JP5764015B2 (en) * 2011-09-02 2015-08-12 中部電力株式会社 Supply device for supplying molten metal to die casting machine
    GB202108524D0 (en) * 2021-06-15 2021-07-28 Eestech Inc Improved smelting system

    Family Cites Families (12)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    SE361683B (en) * 1972-03-29 1973-11-12 Asea Ab
    US3810564A (en) * 1973-06-18 1974-05-14 Midland Ross Corp Air pressure discharge furnace having protective atmosphere inlet and outlet
    JPS5973156A (en) * 1982-10-19 1984-04-25 Mitsubishi Electric Corp Holding furnace for continuous horizontal casting
    GB2162102A (en) * 1984-07-24 1986-01-29 Farmer Roper Ltd Improvements in metal pouring devices
    SE457619B (en) * 1986-02-27 1989-01-16 Asea Ab EXPOSURE HEATERS ARE GIVEN OR OTHER MATALLURGICAL CONTAINERS
    JPS63149055A (en) * 1986-12-15 1988-06-21 Nippon Steel Corp Refining method for molten steel in tundish for continuous casting
    JP2503775Y2 (en) * 1990-02-09 1996-07-03 日本鋼管株式会社 Tundish plasma heating equipment
    JP3009290B2 (en) * 1992-02-18 2000-02-14 三井金属鉱業株式会社 Cast-in gutter for ingots or alloy ingots
    JPH08267199A (en) * 1995-03-29 1996-10-15 Nisshin Steel Co Ltd Method for continuous casting of high cleanliness steel using tundish provided with openable/closable weir
    JPH08276254A (en) * 1995-03-31 1996-10-22 Nisshin Steel Co Ltd Method for continuously casting high cleanliness steel by using tundish provided with openable/closable weir
    JPH1022095A (en) * 1996-07-03 1998-01-23 Nippon Steel Corp Torch ignition controller for migrating plasma heating device
    EP0916435B1 (en) * 1997-11-18 2003-02-12 Fundacion Inasmet Casting furnace for automatic molding

    Non-Patent Citations (1)

    * Cited by examiner, † Cited by third party
    Title
    See references of WO0147656A1 *

    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2399527A (en) * 2003-03-21 2004-09-22 Pyrotek Engineering Materials Tundish with thermostatically controllable heating element
    GB2399527B (en) * 2003-03-21 2005-08-31 Pyrotek Engineering Materials Continuous casting installation & process
    US7379663B2 (en) 2003-03-21 2008-05-27 Pyrotek Engineering Materials Limited Continuous casting installation and process
    CN107655331A (en) * 2017-10-17 2018-02-02 江苏粤阜合金材料有限公司 A kind of environment-friendly type aluminium melting furnace and its method of smelting

    Also Published As

    Publication number Publication date
    KR20020070998A (en) 2002-09-11
    AU2111200A (en) 2001-07-09
    ATE245073T1 (en) 2003-08-15
    DE60003955T2 (en) 2004-05-27
    RU2235002C2 (en) 2004-08-27
    RU2002119584A (en) 2004-02-20
    EP1258303B1 (en) 2003-07-16
    JP2003518439A (en) 2003-06-10
    US6814925B1 (en) 2004-11-09
    WO2001047656A1 (en) 2001-07-05
    ES2168930A1 (en) 2002-06-16
    ES2168930B2 (en) 2003-06-16
    KR100649281B1 (en) 2006-11-24
    DE60003955D1 (en) 2003-08-21

    Similar Documents

    Publication Publication Date Title
    AU754969B2 (en) Melting/retaining furnace for aluminum ingot
    CA2633751A1 (en) Process for production of aluminum ingots, aluminum ingots, and protective gas for the production of aluminum ingots
    FR2501086A1 (en) APPARATUS FOR CASTING MOLTEN METALS USING IMMERSE CASTING TUBE
    EP1258303B1 (en) Novel smelting furnace for molding
    FR2554024A1 (en) IMMERSION CASTING BUSH
    JP3485826B2 (en) Melt holding furnace
    FR2483957A1 (en) FUSION AND CONTINUOUS REFINING OF RECOVERY COPPER AND / OR BLOW
    CN200974116Y (en) High-efficient baking equipment of package immersion nozzle in middle of continuous casting
    EP0875319B1 (en) Tundish provided with at least one plasma torch for reheating molten metal
    FR2529575A1 (en) APPARATUS FOR CARBON GASIFICATION
    EP0897770A1 (en) Process for reheating a molten metal in a tundish using a plasma torch and tundish for performing the process
    US4974817A (en) Metal melting and holding furnace
    JP2004531396A (en) Refractory plug or brick for injecting gas into molten metal
    CN212682434U (en) Nitrogen protection device in water atomization metal powder pouring process
    US771675A (en) Crucible-furnace and crucible.
    JPS5851192B2 (en) Method and apparatus for melting metals and their alloys
    JPH06320255A (en) Pressurizing type molten metal pouring furnace for spheroidal graphite cast iron product
    EP0916435B1 (en) Casting furnace for automatic molding
    CN220489694U (en) Melt integrative stove of protecting
    RU2119844C1 (en) Process of drying and heating of lining of casting ladle
    JP4243711B2 (en) Crucible furnace
    FR2693135A1 (en) Continuous casting installation between moving walls, and casting method using the installation.
    JP3343467B2 (en) Waste melting furnace
    KR200255038Y1 (en) Smelting furnace for precious metals a casting plasticity
    JPS6038153Y2 (en) metal melting furnace

    Legal Events

    Date Code Title Description
    PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

    Free format text: ORIGINAL CODE: 0009012

    17P Request for examination filed

    Effective date: 20020620

    AK Designated contracting states

    Kind code of ref document: A1

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAA (expected) grant

    Free format text: ORIGINAL CODE: 0009210

    AK Designated contracting states

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20030716

    Ref country code: FI

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20030716

    Ref country code: CY

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20030716

    Ref country code: AT

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20030716

    Ref country code: NL

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20030716

    Ref country code: FR

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20030716

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: FG4D

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: EP

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: FG4D

    REF Corresponds to:

    Ref document number: 60003955

    Country of ref document: DE

    Date of ref document: 20030821

    Kind code of ref document: P

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: DK

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031016

    Ref country code: SE

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031016

    Ref country code: GR

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031016

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: ES

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031027

    GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

    Effective date: 20031020

    NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: PT

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031216

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: IE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040121

    Ref country code: LU

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040121

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: LI

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040131

    Ref country code: CH

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040131

    Ref country code: MC

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040131

    Ref country code: BE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040131

    PLBE No opposition filed within time limit

    Free format text: ORIGINAL CODE: 0009261

    STAA Information on the status of an ep patent application or granted ep patent

    Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

    26N No opposition filed

    Effective date: 20040419

    EN Fr: translation not filed
    BERE Be: lapsed

    Owner name: *FUNDACION INASMET

    Effective date: 20040131

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PL

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: MM4A

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 17

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R082

    Ref document number: 60003955

    Country of ref document: DE

    Representative=s name: GLAWE DELFS MOLL PARTNERSCHAFT MBB VON PATENT-, DE

    Ref country code: DE

    Ref legal event code: R082

    Ref document number: 60003955

    Country of ref document: DE

    Representative=s name: RAIBLE, DEISSLER, LEHMANN PATENTANWAELTE PARTG, DE

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R082

    Ref document number: 60003955

    Country of ref document: DE

    Representative=s name: RAIBLE, DEISSLER, LEHMANN PATENTANWAELTE PARTG, DE

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 18

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 19

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: FR

    Payment date: 20190124

    Year of fee payment: 20

    Ref country code: IT

    Payment date: 20190108

    Year of fee payment: 20

    Ref country code: DE

    Payment date: 20190122

    Year of fee payment: 20

    Ref country code: GB

    Payment date: 20190121

    Year of fee payment: 20

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R071

    Ref document number: 60003955

    Country of ref document: DE

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: PE20

    Expiry date: 20200120

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

    Effective date: 20200120